With the new OF GPIO infrastructure it's much easier to handle I2C
GPIO controllers, i.e. now drivers don't have to deal with the
OF-specific bits.
Signed-off-by: Anton Vorontsov <avoront...@ru.mvista.com>
---
arch/powerpc/platforms/83xx/mcu_mpc8349emitx.c | 68 +++++-------------------
1 files changed, 14 insertions(+), 54 deletions(-)
diff --git a/arch/powerpc/platforms/83xx/mcu_mpc8349emitx.c
b/arch/powerpc/platforms/83xx/mcu_mpc8349emitx.c
index 73c7e6b..5525175 100644
--- a/arch/powerpc/platforms/83xx/mcu_mpc8349emitx.c
+++ b/arch/powerpc/platforms/83xx/mcu_mpc8349emitx.c
@@ -18,8 +18,6 @@
#include <linux/mutex.h>
#include <linux/i2c.h>
#include <linux/gpio.h>
-#include <linux/of.h>
-#include <linux/of_gpio.h>
#include <asm/prom.h>
#include <asm/machdep.h>
@@ -36,7 +34,7 @@ struct mcu {
struct mutex lock;
struct device_node *np;
struct i2c_client *client;
- struct of_gpio_chip of_gc;
+ struct gpio_chip gc;
u8 reg_ctrl;
};
@@ -55,8 +53,7 @@ static void mcu_power_off(void)
static void mcu_gpio_set(struct gpio_chip *gc, unsigned int gpio, int val)
{
- struct of_gpio_chip *of_gc = to_of_gpio_chip(gc);
- struct mcu *mcu = container_of(of_gc, struct mcu, of_gc);
+ struct mcu *mcu = container_of(gc, struct mcu, gc);
u8 bit = 1 << (4 + gpio);
mutex_lock(&mcu->lock);
@@ -75,53 +72,6 @@ static int mcu_gpio_dir_out(struct gpio_chip *gc, unsigned
int gpio, int val)
return 0;
}
-static int mcu_gpiochip_add(struct mcu *mcu)
-{
- struct device_node *np;
- struct of_gpio_chip *of_gc = &mcu->of_gc;
- struct gpio_chip *gc = &of_gc->gc;
- int ret;
-
- np = of_find_compatible_node(NULL, NULL, "fsl,mcu-mpc8349emitx");
- if (!np)
- return -ENODEV;
-
- gc->owner = THIS_MODULE;
- gc->label = np->full_name;
- gc->can_sleep = 1;
- gc->ngpio = MCU_NUM_GPIO;
- gc->base = -1;
- gc->set = mcu_gpio_set;
- gc->direction_output = mcu_gpio_dir_out;
- of_gc->chip = gc;
- of_gc->gpio_cells = 2;
- of_gc->xlate = of_gpio_simple_xlate;
-
- np->data = of_gc;
- mcu->np = np;
-
- /*
- * We don't want to lose the node, its ->data and ->full_name...
- * So, if succeeded, we don't put the node here.
- */
- ret = gpiochip_add(gc);
- if (ret)
- of_node_put(np);
- return ret;
-}
-
-static int mcu_gpiochip_remove(struct mcu *mcu)
-{
- int ret;
-
- ret = gpiochip_remove(&mcu->of_gc.gc);
- if (ret)
- return ret;
- of_node_put(mcu->np);
-
- return 0;
-}
-
static int __devinit mcu_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
@@ -141,7 +91,16 @@ static int __devinit mcu_probe(struct i2c_client *client,
goto err;
mcu->reg_ctrl = ret;
- ret = mcu_gpiochip_add(mcu);
+ mcu->gc.dev = &client->dev;
+ mcu->gc.owner = THIS_MODULE;
+ mcu->gc.label = dev_name(&client->dev);
+ mcu->gc.can_sleep = 1;
+ mcu->gc.ngpio = MCU_NUM_GPIO;
+ mcu->gc.base = -1;
+ mcu->gc.set = mcu_gpio_set;
+ mcu->gc.direction_output = mcu_gpio_dir_out;
+
+ ret = gpiochip_add(&mcu->gc);
if (ret)
goto err;
@@ -168,9 +127,10 @@ static int __devexit mcu_remove(struct i2c_client *client)
glob_mcu = NULL;
}
- ret = mcu_gpiochip_remove(mcu);
+ ret = gpiochip_remove(&mcu->gc);
if (ret)
return ret;
+
i2c_set_clientdata(client, NULL);
kfree(mcu);
return 0;
--
1.6.5.7
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